// Errors:
//
// pkg/front_end/testcases/override_check_after_inference.dart:24:53: Error: The parameter 'x' of the method 'F::f' has type #lib1::B, which does not match the corresponding type in the overridden method (#lib1::A).
// Change to a supertype of #lib1::A (or, for a covariant parameter, a subtype).
//   void f(B /*@error=OverrideTypeMismatchParameter*/ x) {}
//                                                     ^

library;
import self as self;
import "dart:core" as core;

class A extends core::Object {
  synthetic constructor •() → void
    : super core::Object::•()
    ;
}
class B extends self::A {
  synthetic constructor •() → void
    : super self::A::•()
    ;
}
class C extends core::Object {
  synthetic constructor •() → void
    : super core::Object::•()
    ;
  method f(self::A x) → void {}
}
class D extends self::C {
  synthetic constructor •() → void
    : super self::C::•()
    ;
  method f(self::A x) → void {}
}
class E extends self::D {
  synthetic constructor •() → void
    : super self::D::•()
    ;
  method f(self::A x) → void {}
}
class F extends self::D {
  synthetic constructor •() → void
    : super self::D::•()
    ;
  method f(self::B x) → void {}
}
static method main() → dynamic {}